Cant find ESP module. Looked everywhere

[Delboyandco]

I have a 2009 Mercedes E350. Vin WDBUF56X39B376564

I hane change break switch abs sensors, reset yaw sensor abd a mysiad of other tests. I just want to change the ESP sensor.
Error is: 4841 Control unit N47 (ESP control unit) does not match the vehicle. All light are on: triagle abs espavb etc. Can someone please guide me to the eact location
Thank You

 

[Botus]

mine is in the case with the front SAM I believe, with the yaw sensor in the boot behind the rear seats (but its not an e class)

to be blunt, you have got at the car using tools you don't understand and done some damage, throwing more and more parts can't ever cure that problem.

As someone pointed out early on (in your other two posts), the module has lost its vehicle data. So you either pay someone who has naughty software that forces the data back at a module outside the "official methods" or pay crazy money for a dealer to install and code a brand new blank module.

For many years the manufacturers have for two reasons sought to lock down how components operate and who can work on it
1) to sell more cars or more new parts
2) to ensure safety systems operate how they should. They have an obligation to have safe vehicles out on the roads.

Tampering with safety stuff you don't understand and then getting stuck may well have been the manufacturer trying to keep us safe !

"Virginising" (as the trade call it) is wiping out old vehicle data from used parts so they can be installed in other vehicles. Some BMW dealer tools do have this capability, but few know or understand how to use it and BMW certainly don't want you to know how to do it. I don't know if Mercedes developer mode can do this, but the other bit of fun is knowing how to use it and having the correct software to reload when doing it.

Up to 2009 all the software to flash each module on all their cars was part of the dealer tools. Where legit they got the new files posted to them on a CD. I think they supported this slow clunky method till 2012. The risk was many dealers were loading buggy out of date software.

Imagine you make a car in 2008. But something about the ABS is dangerous, the car needs updating. But to maintain their reputation manufacturers hate anyone to know this. Litigation could even finish them off. So they keep quiet and are happy to let a number of people die to keep their legal team and accountants happy, untill they slowly come up with a bodge software fix.

Think Boeing. If you have 0.66 crashes a year x 300 people x 100k payout and the full cost to develop a repair and the costs of having the plane not flying come out as more expensive, just let them die. Its just maths.

However as cars tend to have one driver not 300 and a new bumper is less than 100 million for a plane, a tweak to the software is often a cheap fix (if you kept it quiet, you don't even have to prove its safe on a car !). Plus we have more Mercs than Boeings so you might see it in the papers more often and may drop sales. So an update comes out in Oct 2009, your fake dealer tool has that file all's good. But what happens when they realise this update is just as bad? By Mar 2012 a good version of the software comes out. But as you don't have TIPS you never knew and also can't flash it to the car as the old tool can't do on-line SCN coding.

Since 2012 (I think) Mercedes dealer tools no longer have the software at hand. All the files to flash modules was held (2012 to 2018) in germany on their servers. With the need for every garage worldwide to pull 20 gig a day to flash the odd module on a Mercedes, that turns out to be unworkable.

So I think, mid 2019 , you got your £10k a year rental set up updated. And in came a server at each location updated overnight from Germany. And now all the software files moved to encrypted files held at each garage, but no use to anyone and thus not leaked for just anyone to use. On the day, the dealer phones home for permission to use and gets the key to unscramble for a one time on-line hand held flash of the module. It knows which specific car, what time, what dealership, what operator, it even asks why he's doing it, and records in Germany how successfully it loaded the software. And then the last step is configure how it works on that specific car exactly to the spec it had when leaving the factory.

That way no one can share the files and or flash the wrong things at the wrong car the wrong way. (nor hack the software to up the E diff lock up on you M car, just so you can show of at Lidl, then lose it at 140mph on an autobahn sweeper and take everyone out - just like the BM fan boys have done)

this site tend to have pic on where to find things

http://www.mercedesmedic.com/esp-light-reset/